Design, Simulation And Analysis Of Disc Rotor Using Anycasting Software.

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UNIVERSITI TEKNIKAL MALAYSIA MELAKA

DESIGN, SIMULATION AND ANALYSIS OF DISC ROTOR USING

ANYCASTING SOFTWARE

This report submitted in accordance with requirement of the Universiti Teknikal Malaysia Melaka (UTeM) for the Bachelor's Degree in Manufacturing Engineering

Technology (Product Design) (Hons.)

NORAZIRA BINTI JANI B071210443

900129-14-5440

FACULTY OF ENGINEERING TECHNOLOGY 2015

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DECLARATION

I hereby, declare that this report entitled “Design, Simulation, and Analysis of Disc Rotor Using Anycasting Software” is the result of my own research except as cited in the references.

Signature : ………. Name : NORAZIRA BINTI JANI

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APPROVAL

This report is submitted to the Faculty of Engineering Technology of UTeM as a partial fulfillment of the requirements for the degree of Bachelor of Engineering Technology Product Design (Hons.). The member of the supervisory is as follow:

………. (Project Supervisor)

………. (Project Co-Supervisor)

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ABSTRAK

Tujuan kajian ini adalah untuk mengkaji tentang kecacatan yang akan terhasil dalam proses tuangan pada cakera brek daripada bahan 'gray cast iron' melalui proses tuangan pasir. Kajian ini mengenai tuangan pasir dalam menghasilkan produk dimana di dalam industri pembuatan setiap produk yang dihasilkan mestilah mengikut spesifikasi dan kualiti yang ditentukan bagi mengelakkan produk itu tidak diterima. Pendekatan cuba jaya digantikan dengan teknologi moden dimana perisian simulasi digunakan dalam industri tuangan. Perisian Solidwork digunakan dalam memodel produk dan perisian simulasi AnyCasting digunakan dalam menjalankan proses tuangan pasir. Empat sifat kualiti yang akan dikaji iaitu masa pembekuan, rongga susut, mikro porositi dan isipadu penahan cairan. Hasil daripada ujikaji yang telah dilakukan, masa tuangan 100% kadar tuangan untuk rekabentuk 1 ialah 5.9865 saat, untuk rekabentuk 2 ialah 7.6648 saat dan untuk rekabentuk 3 sebanyak 1.5559 saat. Masa pembekuan pada 100% kadar pembekuan untuk rekabentuk 1 ialah 1172.8 saat, rekabentuk 2 selama 1452.6 saat dan rekabentuk 3 pula 1209.3 saat.

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ABSTRACT

The aim of this study was to investigate the defects that will occur when designing a mould of disc brake by using gray cast iron as material through sand casting process. It is also study about sand casting to produce a product in the manufacturing of each product must be in accordance with specifications and quality in order to avoid products that have to be rejected. In this study, the trial and error approach has been replaced with modern technology, where simulation software is used instead to reduce the defects in casting. This project will focused on the simulation software that will run the sand casting process. Solidwork software is used in modelling and simulation software AnyCasting is used in simulating the sand casting process. The four quality characteristics that will be investigated in this study are the solidification time, shrinkage cavity, micro porosity and retained melt volume. The result of this study of the filling time at 100% filling rate for design 1 is 5.9865 seconds, for design 2 is 7.6648 seconds and for design 3 is 1.5559. The solidification time at 100% solidification rate for design 1 is 1172.8 seconds, for design 2 is 1452.6 seconds and for design 3 is 1209.3 seconds.

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DEDICATION

Dedicated to my beloved parents, Jani Bin Isa and Mardiah Binti Gariman because of their loves, understanding and supporting. Special thanks to my supervisor, Ms. Nur Farah Bazilah Binti Wakhi Anuar, my co-supervisor, Mr. Mohamad Ridzuan Bin Mohamad Kamal, for the encouragement and patience in guiding to completing this project. To my friends, for all of their help and friendship.

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ACKNOWLEDGEMENT

First of all, I would like to thank to Allah because without HIM I was lost and nothing in this world. I would like to express my deepest appreciation to all those who provided me the possibility to complete this Final Year Project report. I am highly indebted to Ms. Nur Farah Bazilah binti Wakhi Anuar and Mr. Mohamad Ridzuan bin Mohamad Kamal for their valuable guidance and advice and also constant supervision as well as for providing necessary information regarding the project and also for their support in completing this project.

I would like to express my gratitude toward my father, Jani bin Isa and my mother, Mardiah binti Gariman because of their understanding, supporting and also for their encouragement which help me from the beginning until now in completion of this project.

Last but not least, I would like to thanks to Faculty of Engineering Technology (FTK) UTeM, for providing me with a good environment and facilities to complete this projects. Thanks to all of the lecturers, and also to my dearest friends that involved direct or indirectly due to the cooperative support that given to me during my Final Year Project.

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Abstrak i

Abstract ii

Dedication iii

Acknowledgement iv

Table of Content v

List of Tables x

List of Figures xi

List Abbreviations, Symbols and Nomenclatures xv

CHAPTER 1: INTRODUCTION 1

1.1 Background 1

1.2 Problem Statement 2

1.3 Objectives 2

1.4 Scope of Project 3 CHAPTER 2: LITERATURE REVIEW 4

2.1 Introduction 4

2.2 Cast Iron 4

2.2.1 White Cast Iron 5

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2.2.2.1 Composition of Gray Cast Iron 7

2.2.2.2 Heat Treatment of Gray Cast Iron 8

2.2.2.3 Properties of Gray Cast Iron 9

2.2.3 Malleable Cast Iron 9

2.2.4 Ductile Cast Iron 10

2.3 Metal Casting Process 11

2.4 Sand Casting 12

2.4.1 Sand Preparation 13

2.4.2 Core Making 13

2.4.3 Moulding 13

2.4.4 Melting 14

2.4.5 Pouring 14

2.4.6 Cleaning 14

2.5 Type of Sand Moulds 15

2.6 Pattern and Core Box Materials 16

2.7 Types of pattern 17

2.8 Gating System 19

2.8.1 Pouring Basin 19

2.8.2 Sprue 20

2.8.3 Runner 20

2.8.4 Gates 21

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2.10 AnyCasting Software 26

2.10.1 Solidification Time 26

2.10.2 Temperature Gradient 27

2.10.3 Filling time 27

2.10.4 Retained Melt Volume 27

2.11 AnyPRE 27

2.12 AnySOLVER 28

2.13 AnyPOST 28

2.14 AnyDBASE 28

2.15 AnyMESH 28

2.16 Batch-Runner 29

CHAPTER 3: METHODOLOGY 30

3.1 Introduction 30

3.2 Flowchart 30

3.3 Part Selection and 3D Drawing 32

3.3.1 Mould Design for Sand Casting 33

3.4 Simulation 35

3.5 AnyCasting Software 36

3.6 Process Flow and Procedures of AnyCasting Software 37

3.6.1 Simulation Steps and Procedures 37

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CHAPTER 4: RESULT & DISCUSSION 42

4.1 Introduction 42

4.2 Simulation Results 42

4.2.1 Analysis of Filling Time 44

4.2.2 Analysis of Solidification Time 48

4.2.3 Analysis of Shrinkage Cavity 52

4.2.4 Analysis of Retained Melt Volume 52

4.2.5 Analysis of Particle Tracing 55

4.2.6 Analysis of Macro Shrinkage on Probabilistic Defect Parameter 59

4.2.7 Heat Transfer Model 61

4.2.8 Cooling Curve 63

CHAPTER 5: CONCLUSION & RECOMMENDATION 66

5.1 Introduction 66

5.2 Conclusion 66

5.3 Recommendation 67

REFERENCES 68

APPENDICES 70

A Gantt Chart 71

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LIST OF TABLES

Table 2.1 Graphitization Range of Composition of Gray Iron

Table 3.1 Typical Value of Volumetric Shrinkage

Table 4.1 The Filling Time for All 3 Designs

Table 4.2 Filling Time Result AnySOLVER for Design 1 Table 4.3 Filling Time Result AnySOLVER for Design 2 Table 4.4 Filling Time Result AnySOLVER for Design 3 Table 4.5 The solidification Time for All 3 Designs

Table 4.6 Solidification Time Result AnySOLVER for Design 1 Table 4.7 Solidification Time Result AnySOLVER for Design 2 Table 4.8 Solidification Time Result AnySOLVER for Design 3 Table 4.9 The Value Set on Heat Transfer Model

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LIST OF FIGURES

Figure 2.1 The Changes Occur on Cooling in Hypoeutectic White Cast Iron. Figure 2.2 Microstructure of White Cast Iron.

Figure 2.3 Microstructure of Gray Cast Iron. Figure 2.4 Microstructure of Malleable Cast Iron. Figure 2.5 Microstructure of Ductile Cast Iron. Figure 2.6 Sand Casting Process.

Figure 2.7 Solid Pattern. Figure 2.8 Split Pattern.

Figure 2.9 Match-Plate Pattern. Figure 2.10 Cope and Drag Pattern. Figure 2.11 The Gating System element. Figure 2.12 Typical Shape of Pouring Basin. Figure 2.13 Top Gate.

Figure 2.14 Bottom Gate. Figure 2.15 Blowholes Defect. Figure 2.16 Shrinkage Defect. Figure 2.17 Hot Tear Defect.

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Figure 2.18 Porosity Defect.

Figure 2.19 The Inclusion of Foreign Material. Figure 2.20 Mould Shift Defect.

Figure 2.21 Misruns Defect. Figure 2.22 Penetration Defect.

Figure 3.1 Process Flow for Both Bachelor Degree Project 1 and 2. Figure 3.2 The Real Part of Disc Brake.

Figure 3.3 Disc Brake Part Drawing.

Figure 3.4 (a) The head of metal varies from H at the start of pour to h at the end. M is; (b) √h for a top gated system; (c) √(h-c/2) for a bottom gated system; (d) √(h-p2/2c) for a side gated system

Figure 3.5 Experimental Flow Chart Figure 3.6 AnyPRE Process Flow Figure 3.7 AnyPRE Feature

Figure 3.8 The Setting for The Gate Condition Figure 3.9 The AnySOLVER

Figure 3.10 AnySOLVER Complete Figure 3.11 AnyPOST Feature

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Figure 4.2 Design 2 Figure 4.3 Design 3

Figure 4.4 Analysis of Filling Time on Design 1 Figure 4.5 Analysis of Filling Time on design 2 Figure 4.6 Analysis of Filing Time on Design 3

Figure 4.7 Analysis of Solidification Time on Design 1 Figure 4.8 Analysis of Solidification Time on Design 2 Figure 4.9 Analysis of Solidification Time on Design 3 Figure 4.10 Analysis of Retained Melt Volume for design 1 Figure 4.11 Analysis of Retained Melt Volume for Design 2 Figure 4.12 Analysis of Retained Melt Volume for Design 3 Figure 4.13 Analysis of Particle Tracing for Design 1 Figure 4.14 Analysis of Particle Tracing for Design 2 Figure 4.15 Analysis of particle Tracing for Design 3

Figure 4.16 Analysis of Macro Shrinkage on Probabilistic Defect Parameter for the Design 1

Figure 4.17 Analysis of Macro Shrinkage on Probabilistic Defect Parameter for the Design 2

Figure 4.18 Analysis of Macro Shrinkage on Probabilistic Defect Parameter for the Design 3

Figure 4.19 Parameter in Heat Transfer Model Figure 4.20 The Cooling Curve for Design 1

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Figure 4.21 The Cooling Curve for Design 2 Figure 4.22 The Cooling Curve for Design 3

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LIST OF ABBREVIATIONS, SYMBOLS AND

NOMENCLATURE

C - Carbon

CAD - Computer Aided Design

Fe - Iron

FeCr2O4 - Chromite Fe2SiO4 - Fayalite Mg2SiO4 - Fosterite

Mn - Manganese

P - Phosphorus

S.G - Spheroidal Graphite

S - Sulphur

Si - Silicon

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INTRODUCTION

1.1 Background

Foundry sand is often used in the industry to make parts consisting of iron, bronze, copper and aluminum as well. The metal is poured into the mould cavity that formed by the sand when the metal melted in the furnace. The process is relatively simple and inexpensive, and many industries use this process. However, the weakness of sand casting is commonly in parts of cast sand and it can affect the properties of casting materials (Merten, 2012).

Gray cast iron is one of the most important casting materials and has many industrial applications because of its good castability properties and large variation in mechanical properties. The variation of mechanical properties depends on the microstructure. The quality of the casting parts is depend on the percentage of the porosity in the product (Kumar & Kumar, 2012).

Disc brake or disc rotor is a device for slowing or stopping the rotation of the tire wheels. It is usually made of cast iron or ceramic, and connected to the wheels. Friction material on the brake pads are forced to stop the wheels mechanically, hydraulically or pneumatically against both sides of the disk and the resulting friction causes the disc and wheel to slow or stop the vehicle. Most of brake discs are produced with sand casting process. Casting defects such as shrinkage porosity and hot tear often occurs in sand casting process. This defect is influenced by the geometry of the casting, also from the runner and gating system that will lead to the formation and distribution of the defect.

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proper running and gating system is the most importance to take into account to solve this problems. However, the translucent of the mould and high temperature molten metal during the casting process makes it difficult to be observed. Trial and error practices to get optimum design are expensive and time consuming. Casting process simulation is to help engineers to optimize the design foundry through a better understanding of the history of the solidified casting temperature. Simulation results can be used to obtain a defect free casting a systematic way (Yeh, Hwang, & Lin, 2008).

1.2 Problem Statement

The major problem in casting was defect. To detect the defect in the casting are by using a simulation because it is more simple and easy to detect the problem. In this simulation, we can know the problem about the solidification defect in casting. It is because, by using this simulation, we can see in three dimensional views. From that, we can see clearly at which part the defect on the cast occurs. In this project the result were simulate by the AnyCasting software. AnyCasting software simulation designed for casting process. It will help the foundry to produce better casting with forecast the defect through a simulation.

1.3 Objectives

The objectives of this project are:

i. To design the mould sand casting using Solidworks.

ii. To simulate the casting simulation of Gray Cast Iron disc brake in AnyCasting software.

iii. To analyze the casting defects on Gray Cast Iron disc brake in AnyCasting software.

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This project will be limited to this aspect:

i. This project is focusing on the defects of gray cast iron disc brake.

ii. This project also focusing on the defect casting parameter in AnyCasting software.

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CHAPTER 2

LITERATURE REVIEW

2.1 Introduction

Most brake rotor was made from gray cast iron is produced by many industrial foundry in this era. The cast iron material vary from the steel materials were higher in carbon (C) content and silicon (Si). Heavy steel have weight less than 1.2 percent (wt.%) carbon and a little or no silicon, where the carbon content in a cast iron usually range from 2.5 to 4.5 wt.% C and 1 to 3 wt.5 Si. It have a higher Sulphur (S) and Phosphorus (P) contents meanwhile the manganese is an important additive in the both metals. To lower the melting point of the metal, it must be added some extra carbon and silicon in cast iron. Cast iron material is easy to cast the complex shapes such as fittings and pipe. It will tend to form a brittle iron sulphide at the boundaries of the grains if it is without the Manganese even it is with Sulphur. This will cause the inclusion form and cause the crack during rolling and other forming and it would be a problem in steels (Iraqi, For, & Engineering, 2010).

2.2 Cast iron

It is primarily composed of iron (Fe), carbon (C) and silicon (Si), but may also contain of Sulphur (S), Manganese (Mn) and Phosporus (P) and it is the one of the oldest ferrous metals that use in foundry. The structure of the cast iron was crystalline and it is easy to brittle and weak in tension and the mechanical properties cast iron is hard, brittle, non-malleable than steel. Even though it is brittle, it is very good in compression. To determining the characteristic of cast iron, the methods to

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manufacture itself will affect and the composition of the cast iron are must be taken very seriously.

Cast iron is commonly used in variety of structural and a decorative application because of it is reasonably inexpensive, durable and easy to cast into several of shapes and the most typical that are used:

i. Hardware such as hinges, latches ii. Stairs

iii. Fences

iv. Tools and utensils v. Stoves

vi. Structural connectors in buildings and monuments.

The characteristic of cast iron is extremely strong and durable when it is used correctly and confined from adverse exposure. It is commonly found in columns, rather than in structural beams because of, it is much stronger in compression than in tension. However, it is disposed to corrosion when it is exposed to moisture and has several regular problems which usually can be identified by visual inspection (Pulkit Bajaj, 2010).

2.2.1 White cast iron

White cast iron contains more than 2.11% carbon and all the carbon that present were combined in cementite form which is, it makes the fracture of these alloys have white and dull colour. Typical white cast iron contains 2.5 until 3.5% C, 0.4 until 1.5% Si, 0.4 until 0.6% Mn, 0.1 until 0.4% P, 0.15% S, and the balance are Fe. The figure below show the changes occur on cooling in hypoeutectic white cast iron (Pulkit Bajaj, 2010).

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Figure 2.1: The changes occur on cooling in hypoeutectic white cast iron

The typical microstructure of white cast ironis consisting of dendrites of changed of austenite (Pearlite) in a white interdendritic network of cementite as shown in Figure 2.2 below.

Figure 2.2: Microstructure of white cast iron

White irons find inadequate in engineering applications because of the extreme brittleness and lack of machinability. The parts where resistance to wear is the most important requirement such as liners of cement mixers, ball mills, pumps, wearing plates. Parts of sand slingers, certain type of drawing dies, extrusion nozzles, grinding balls. Most parts are sand-cast and do not require much machining, which

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CHAPTER 1

INTRODUCTION

1.1 Background

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2 inclusions trapped and the dissolved gas as running with poorly designed. Design a proper running and gating system is the most importance to take into account to solve this problems. However, the translucent of the mould and high temperature molten metal during the casting process makes it difficult to be observed. Trial and error practices to get optimum design are expensive and time consuming. Casting process simulation is to help engineers to optimize the design foundry through a better understanding of the history of the solidified casting temperature. Simulation results can be used to obtain a defect free casting a systematic way (Yeh, Hwang, & Lin, 2008).

1.2 Problem Statement

1.3 Objectives

The objectives of this project are:

i. To design the mould sand casting using Solidworks.

ii. To simulate the casting simulation of Gray Cast Iron disc brake in AnyCasting software.

iii. To analyze the casting defects on Gray Cast Iron disc brake in AnyCasting software.

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1.4 Scope of Project

This project will be limited to this aspect:

i. This project is focusing on the defects of gray cast iron disc brake.

ii. This project also focusing on the defect casting parameter in AnyCasting software.

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CHAPTER 2

LITERATURE REVIEW

2.1 Introduction

2.2 Cast iron

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5 manufacture itself will affect and the composition of the cast iron are must be taken very seriously.

i. Hardware such as hinges, latches ii. Stairs

iii. Fences

iv. Tools and utensils v. Stoves

vi. Structural connectors in buildings and monuments.

2.2.1 White cast iron

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Figure 2.1: The changes occur on cooling in hypoeutectic white cast iron

The typical microstructure of white cast ironis consisting of dendrites of changed of austenite (Pearlite) in a white interdendritic network of cementite as shown in Figure 2.2 below.

Figure 2.2: Microstructure of white cast iron

Design, Simulation And Analysis Of Disc Rotor Using Anycasting Software.

UNIVERSITI TEKNIKAL MALAYSIA MELAKA